app.service('uploadService',function($http){
	this.uploadFile=function(){
		var formData=new FormData();
		formData.append('file',file.files[0]);
		return $http({
			url:"../upload.do",
			method:'post',
			data:formData,
			headers:{'Content-Type':undefined},
			transformRequest:angular.identity
			
		})
	}
})